Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第III部門

トンネル (2)

Thu. Sep 5, 2019 8:40 AM - 10:10 AM III-1 (幸町北4号館 411講義室)

座長:芥川 真一(神戸大学)

[III-270] Report on countermeasure for floor heaving deformation at Kanmuriyama Tunnel(Inbound line) of Chugoku Expressway

*鈴木 健太郎1、村上 豊和1 (1. 西日本高速道路)

Keywords:The floor heaving deformation, Invert construction, by two-way traffic

Report on countermeasure for floor heaving deformation at Kanmuriyama Tunnel(Inbound line) of Chugoku Expressway.
It is serviced commencement in 1990 and constructed by the NATM method. The floor heaving deformation occured at the slate and fracture zone, and the amount of one is about 150mm. It is important to formulate the traffic operation such as road closed, because construction of invert in expressway during serviced commencement is needed to excavate the bottom. Overall width collective construction is possible by two-way traffic in outbound line. This report is a summary of the construction plans and points to be considered during the countermeasure.

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